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CVE-2016-5399

Publication date 22 July 2016

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

The bzread function in ext/bz2/bz2.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 allows remote attackers to cause a denial of service (out-of-bounds write) or execute arbitrary code via a crafted bz2 archive.

Read the notes from the security team

Status

Package Ubuntu Release Status
php5 16.04 LTS xenial Not in release
15.10 wily Ignored end of life
14.04 LTS trusty
Fixed 5.5.9+dfsg-1ubuntu4.19
12.04 LTS precise
Fixed 5.3.10-1ubuntu3.24
php7.0 16.04 LTS xenial
Fixed 7.0.8-0ubuntu0.16.04.2
15.10 wily Not in release
14.04 LTS trusty Not in release
12.04 LTS precise Not in release

Notes

seth-arnold

PHP position seems to suggest they'll fix bzread() to ensure it conforms to the documented behaviour but they won't take any steps to 'safe' an improper use of API by applications. Since the API was apparently not honoured before I don't know how an application could be expected to be correct.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
php5
php7.0

Severity score breakdown

Parameter Value
Base score 7.8 · High
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

Other references